Try cutting out caffeine. And watch your sugar intake like a hawk. Are you taking a multivitamin?
And stop all drinking. I know it's shitty, but seriously, you don't need alcohol complicating everything.
One thing you could try is growing something. There's something very grounding about soil and planting.
Also you could try singing. That's helped my DM a lot; she goes to a choir and says it helps her release anxiety and tension.
Also when things get bad, try a tablespoon of cream (if you are not lactose intolerant). Your brain can't process stressors and eating at the same time.
Again, up your veg ratios a lot. I'm talking a plate of the stuff in as many colours as possible for lunch and dinner with a protein. If you are an animal protein eater, make sure you eat fish once a week.
Try morning pages. This is where you write three pages of whatever every morning every day and you don't read them back. It's a brain dump. Get it all cleared out.
Again, try getting into nature as spudina says. If you have a forest, a wood, or a shoreline near you, hit it!
The running is great, BTW.
I'll try and think of some more stuff. It is possible to beat severe anxiety and ptsd without meds. I know; I did it. But it requires sometimes trying some weird ideas out. 